US2121738A - Lighting fixture - Google Patents

Description

June 21, 1938.

- B. HURLBUT 2,121,738 7 LIGHTING FIXTURE Filed May 21, 1937 INVENTOR 2 GordonBJ-[urMuL BY 7%?49. ATTO EY Patented June 21, 1938 UNITED STATES PATENT orriesb LIGHTING FIXTURE Gordon B. Hurlbut, Middlebury, Conn, assignor to The Plume & Atwood Manufacturing Company, Waterbury, Conn, a corporation of Connecticut Application May 21, 1937, Serial No. 144,009

1 Claim. (01. 2 40-98.). I

This invention relates to illumination, and portion. The socket is adapted to be held in more particularly to lighting fixtures adapted to adjusted position upon said stem [2, l3 by means besuspended from a ceiling canopy or like supof a set screw threaded into a hub 26 extendport, and having means to adjust the position ing upwardly from the flange 23 and engaging a of a shade with respect to a lamp enclosed thereflattened area 21 provided on said stem l2, I3, ythus preventing rotation of the socket thereon.

One object of this invention is to provide a The socket cover or bell I6, I1, is inturned at lighting fixture of the above nature comprising its closed upper end and provided with a cira pendant stem having a threaded section adjacular aperture 28 loosely surrounding the threadcent its lower end to receive an adjustable tapped ed upper end 30 of an internally threaded adbushing for supporting a combined lamp socket justable bushing 29. The bushing 29 has an incover and shade support. termediate annular rib or flange 3| which serves A further object is to provide a lighting flxas a support upon which the bell I6, I! rests. ture of the above nature provided with a flared The bushing 29 is also provided at its lower end sleeve loosely fitted upon the pendant stem and with an unthreaded hub portion 32 through adapted to conceal any threads of said stem and which passes a set screw 33 which is adapted to bushing which would otherwise be exposed, thus engage the threaded stem [2, l3, and to support enhancing the appearance of the lighting fixture. the bell l6, ll at any desired height.

A further object is to provide a lighting fixture The lamp bowl l8 and globe 20 respectively of the above nature which will be simple in conin both forms of the invention may thus be postruction, inexpensive to manufacture, easy to sitioned correctly with relation to the lamps enmanipulate, compact, ornamental in appearance, closed thereby. and very eificient and durable in use. In order to prevent rocking movements of the With these and other objects in view, there bowl holding bell I6 and globe holder l1, respechave been illustrated on the accompanying tively, and to rigidly hold said members against drawing, two forms in which the invention may the bushing 29 without rattling, provision is be conveniently embodied in practice. made of a locking ring nut 35 preferably knurled In the drawing: upon its periphery. The ring nut 35 is adapted Fig. 1 is an elevational view of one form of to be screwed upon the threaded upper end 30 lighting fixture embodying the features of my inof the adjustable bushing 29 and serves to clamp vention. the bell I6 or holder ll against the supporting Fig. 2 is a fragmentary longitudinal sectional rib 3| of said bushing. view taken on the line 2-2 of Fig. 1. To conceal the exposed threads on the stem l2,

Fig. 3 is a view in cross-section taken on the i3, and on the top part of the bushing 29, which line 33 of Fig. 2, looking upwardly.

Fig. 4 is an elevational view of a modified form a short tubular sleeve 36, cylindrical at its top of lighting fixture also embodying the features and flared at its lower end 31. The sleeve 36 is of this invention. adapted tofreely embrace the stem l2, l3 and. Referring now to the drawing wherein like refthe upper end of the bushing 29 and rest by grav- 40 erence characters designate corresponding parts ity upon the upper surface of the ring nut 35.

throughout the several views, the numerals Ill The ornamental appearance of the fixture will and II (Figs. 1 and 4) indicate ceiling canopies, thus be greatly enhanced. from which are suspended pendant stems or operation tubes l2 and I3, respectively, said stems being 4', preferably connected to said canopies by swivel n Operation, W it is e r d o i -Stall the joint [4 nd I5, Each te l2 d I3 i adaptlamp bulb 2| held in the socket 24 in the correct ed to support a flared bell-shaped lamp socket DOSitiOn, e bowl globe Will fi b cover l6, ll, from which a semi-indirect lighting rem0Ve The ring 11111; 35 W then e oose ed bowl I8 is suspended by means of chains l9 (Fig. and the suppo n bell holder l7) the ring 1),anda globe 29 enclosing abulb 2| (Fig. 4). nut 35, and the concealing sleeve 36 will be slipped upwardly along the stem l2, I3, out of the way. The set screw 33 may then be loosened, and the bushing 29 rotated manually in the proper direction to adjust it lengthwise of the stem I2 or [3 as far as desired, whereupon the set screw The tubular pendant stem l2 (I3) is threaded for a substantial portion of its lower end, as shown at 22 in Fig. 2. At the extreme lower end of said stem, provision is made of a socket 24 having a flange 23 screwed on said threaded would otherwise be visible, provision is made of r,

ii i' 33 will be again tightened. The ring nut 35 will then be screwed down upon the bushing 29 and tightened to clamp the bowl I8 (or globe 20) against the annular rib 3l,-the sleeve 36 being permitted to drop by gravity upon the ring nut 35, in which position it will efiectively cover the exposed threads on the stem l2, l3, and the upper end 30 of the bushing 29.

While there have been disclosed in this specification two forms in which the invention may be embodied, it is to be understood that these forms are shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosures, but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claim.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

In a lighting fixture, a supporting stem depending from a ceiling canopy, said stem having an exterior threaded portion of substantial length adjacent its lower end, a lamp socket mounted on the lower end of said stem and detachably secured against translation and rotation with respect thereto, an adjustable bushing screwed on said threaded portion, said bushing being exteriorly threaded at its upper end, a set screw passing through said bushing for detachable engagement with said threaded portion to lock said bushing at any desired height, said bushing having outstanding means intermediate its ends, a hollow shade holder surrounding said stem and lamp socket and having its upper end resting on said outstanding means, a locking nut screwed on the upper part of said bushing for clamping said holder against said outstanding means, and an elongated sleeve flared at its lower end loosely fitted upon said stem and restingby gravity upon said locking nut, said sleeve extending upwardly beyond the threaded portion of said stem and serving to conceal the threads of said stem and said bushing.

GORDON B. HURLBUT.

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